[blam]

"Many of the subplots (Moses in the basket, the various miracles of Moses, even the parting of the sea) were common folk tales of the region, much older than Exodus."

I think it even turns up in the Gilgamesh writings. In fact, I think the same story was told about Gilgamesh, or something close to it.

[Gothmog]

I don't remember anything about Gilgamesh and 'the basket in the river,' but Gilgamesh definitely made a long journey to visit the survivor of the great flood, ie; Noah, when he was searching for the secret of immortality.